... -SULFONIC ACID1,5-DIHYDROXY NAPHTHALENE1,5-NAPHTHALENE DISULFONIC ACID 1,5-NAPHTHALENE DISULFONIC ACID SODIUM SALT(1,5-NDS)1,6-CLEVES ACID1 ... )1-NAPHTHOL-8-SULFONIC ACID1-NAPHTHYLAMINE2,3- ACID2,6-NAPHTHALENE DISULFONIC ACID SODIUM SALT(2,6-NDS)2,7-DIHYDROXY NAPHTHALENE2,7 ... -NAPHTHALENE DISULFONIC ACID SODIUM SALT(2,7-NDS)2-NAPHTHOL4-CHLORO-1,8-NAPHTHALIC ...